There is no disputing the fact that the Bitcoin network has scalability problems. Micropayment channels are a solution to increase the transaction rate and speed. Yet, this is not the golden solution This micropayments solution needs a fixed amount of funds to be locked into each channels multisignature wallet and requires a transaction for each channel creation and closure. This hinders the Blockchain network from upscaling to a global payment system because Bitcoins capacity is limited.A r

Source and More information: This New Scaling Layer Could Make Payment Channels Ten Times More Effective